Commit 3a939433 authored by Lukas Wunner's avatar Lukas Wunner Committed by Greg Kroah-Hartman
Browse files

serial: ar933x: Deassert Transmit Enable on ->rs485_config() 



The ar933x_uart driver neglects to deassert Transmit Enable when
->rs485_config() is invoked.  Fix it.

Fixes: 9be1064f ("serial: ar933x_uart: add RS485 support")
Cc: stable@vger.kernel.org # v5.7+
Cc: Daniel Golle <daniel@makrotopia.org>
Reviewed-by: default avatarIlpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: default avatarLukas Wunner <lukas@wunner.de>
Link: https://lore.kernel.org/r/5b36af26e57553f084334666e7d24c7fd131a01e.1662887231.git.lukas@wunner.de


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent f73db496

drivers/tty/serial/ar933x_uart.c

+7 −0
Original line number Diff line number Diff line
@@ -583,6 +583,13 @@ static const struct uart_ops ar933x_uart_ops = { 
static int ar933x_config_rs485(struct uart_port *port, struct ktermios *termios,

				struct serial_rs485 *rs485conf)

{

	struct ar933x_uart_port *up =

			container_of(port, struct ar933x_uart_port, port);



	if (port->rs485.flags & SER_RS485_ENABLED)

		gpiod_set_value(up->rts_gpiod,

			!!(rs485conf->flags & SER_RS485_RTS_AFTER_SEND));



	return 0;

}